yuhaocheng @ 2020-01-12 14:50:33
C++:
#include<iostream>
using namespace std;
int k;
int n = 1;
int i;
int s = 0;
int main() {
cin >> k;
while(true) {
for(i = 1;i <= n;i += 1) {
s += 1/i;
}
if(s > k) {
break;
}
else {
n += 1;
}
}
cout << n;
}
by CSP_Sept @ 2020-01-12 14:52:40
s += 1/i;
应改为:
s += 1.0/i;
by CSP_Sept @ 2020-01-12 14:52:49
@yuhaocheng
by CSP_Sept @ 2020-01-12 14:54:01
要不然会向下取整的
如:
1/10=0
21/8=2
by CSP_Sept @ 2020-01-12 15:42:46
@yuhaocheng
by CSP_Sept @ 2020-01-12 18:22:46
@yuhaocheng
by yuhaocheng @ 2020-01-12 19:09:13
谢谢